FREE BOOKS

Author's List




PREV.   NEXT  
|<   101   102   103   104   105   106   107   108   109   110   111   112   113   114   115   116   117   118   119   120   121   122   123   124   125  
126   127   128   129   130   131   132   133   134   135   136   137   138   139   140   141   142   143   144   145   146   147   148   149   150   >>   >|  
ecover life and motion by the fresh addition of water and warmth. Thus the chaos redivivum of Linnaeus dwells in vinegar and in bookbinders paste: it revives by water after having been dried for years, and is both oviparous and viviparous; Syst. Nat. Thus the vorticella or wheel animal, which is found in rain water that has stood some days in leaden gutters, or in hollows of lead on the tops of houses, or in the slime or sediment left by such water, though it discovers no sign of life except when in the water, yet it is capable of continuing alive for many months though kept in a dry state. In this state it is of a globulous shape, exceeds not the bigness of a grain of sand, and no signs of life appear; but being put into water, in the space of half an hour a languid motion begins, the globule turns itself about, lengthens itself by slow degrees, assumes the form of a lively maggot, and most commonly in a few minutes afterwards puts out its wheels, swimming vigorously through the water as if in search of food; or else, fixing itself by the tail, works the wheels in such a manner as to bring its food to its mouth; English Encyclopedia, Art. Animalcule. Thus some shell-snails in the cabinets of the curious have been kept in a dry state for ten years or longer, and have revived on being moistened with warmish water; Philos. Transact. So eggs and seeds after many months torpor, are revived by warmth and moisture; hence it may be concluded, that even the organic particles of dead animals may, when exposed to a due degree of warmth and moisture, regain some degree of vitality, since this is done by more complicate animal organs in the instances above mentioned. The hydra of Linnaeus, which dwells in the rivers of Europe under aquatic plants, has been observed by the curious of the present time, to revive after it has been dried, to be restored after being mutilated, to multiply by being divided, to be propagated from small portions, to live after being inverted; all which would be best explained by the doctrine of spontaneous reproduction from organic particles not yet completely decomposed. To this should be added, that these microscopic animals are found in all solutions of vegetable or animal matter in water; as black pepper steeped in water, hay suffered to become putrid in water, and the water of dunghills, afford animalcules in astonishing numbers. See Mr. Ellis's curious account of Animalcules produced from an in
PREV.   NEXT  
|<   101   102   103   104   105   106   107   108   109   110   111   112   113   114   115   116   117   118   119   120   121   122   123   124   125  
126   127   128   129   130   131   132   133   134   135   136   137   138   139   140   141   142   143   144   145   146   147   148   149   150   >>   >|  



Top keywords:

curious

 

animal

 
warmth
 
degree
 
revived
 

organic

 

moisture

 

wheels

 

animals

 

particles


months

 

Linnaeus

 

motion

 

dwells

 

astonishing

 
regain
 

exposed

 
animalcules
 

instances

 
mentioned

organs

 

complicate

 
numbers
 

vitality

 

Transact

 

Philos

 

warmish

 

moistened

 

produced

 

torpor


concluded

 
Animalcules
 

account

 

afford

 

matter

 

vegetable

 

solutions

 

pepper

 

inverted

 

steeped


explained

 

completely

 

decomposed

 

reproduction

 

spontaneous

 

microscopic

 
doctrine
 
portions
 
observed
 

dunghills